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Technical Data Sheet
PartsTable / COMPONENT / TYPE21B171
TYPE21B171 ✓ Verified by PartsTable
— · COMPONENT
WHAT YOU NEED TO KNOW
Verify manufacturer and server generation compatibility Check if Option PN or Spare PN — same part, different channel
Confirm exact part number — similar PNs may be different parts
PRODUCT OVERVIEW

SEAL ASSEMBLY,SHAFT,SPRING LOADE. This part is cataloged in the Federal Logistics Information System (FLIS) under NSN 4320-00-918-4185, indicating validated use in U.S. government and defense logistics supply chains.

Available through authorized enterprise resellers and TPM (Third Party Maintenance) channels. Verify compatibility with your specific system configuration before ordering.

WHERE IT FITS
TYPE21B171
NSN: 4320-00-918-4185
FSC: 4320
CAGE: 71724 — JOHN CRANE, INC (USA)
SPECIFICATIONS
general_characteristics_item_descriptionCONSIST OF SPRING,ALUMINUM 1; SEALS 2; 1 PHONELIC AND SYNTHETIC RUBBER; CRES ENCASED 1; CRES ENCASED W/SYNTHETIC RUBBER SEAL 1; 1.438 IN. OD; 1.031 IN.ID; 2.500 IN. O/A LG IN
NSN4320-00-918-4185
COMPONENT DIAGRAM
COMPONENT MAIN IC EDGE CONNECTOR No detailed specs available SEAL ASSEMBLY,SHAFT,SPRING LOADE TITLE COMPONENT PN TYPE21B171 MFR SEAL ASSEMBLY,SHAFT,SP
KEY FEATURES
•
GENERAL CHARACTERISTICS ITEM DESCRIPTION: CONSIST OF SPRING,ALUMINUM 1; SEALS 2; 1 PHONELIC AND SYNTHETIC RUBBER; CRES ENCASED 1; CRES ENCASED W/SYNTHETIC RUBBER SEAL 1; 1.438 IN. OD; 1.031 IN.ID; 2.500 IN. O/A LG IN
TECHNICAL CHARACTERISTICS (FLIS)
GENERAL CHARACTERISTICS ITEM DESCRIPTIONCONSIST OF SPRING,ALUMINUM 1; SEALS 2; 1 PHONELIC AND SYNTHETIC RUBBER; CRES ENCASED 1; CRES ENCASED W/SYNTHETIC RUBBER SEAL 1; 1.438 IN. OD; 1.031 IN.ID; 2.500 IN. O/A LG IN
VERIFIED SUBSTITUTES & CROSS-REFERENCES 11
141052Interchangeable
interchangeable cross-reference
interchangeable
AA59440/1-001Interchangeable
interchangeable cross-reference
interchangeable
1411052Interchangeable
interchangeable cross-reference
interchangeable
8331464Interchangeable
interchangeable cross-reference
interchangeable
MZ19CInterchangeable
interchangeable cross-reference
interchangeable
191-46Interchangeable
interchangeable cross-reference
interchangeable
LIFECYCLE
StatusCANCELLED
Availability—
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is TYPE21B171?
TYPE21B171 is a SEAL ASSEMBLY,SHAFT,SPRING LOADE.
What parts can replace TYPE21B171?
There are 11 known substitutes for TYPE21B171: 141052, AA59440/1-001, 1411052 and 8 more. Substitute compatibility should be verified for your specific system.
Is TYPE21B171 still available?
TYPE21B171 is currently cancelled.
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✓ Validated with multiple authoritative sources, including Government, OEM, and Certified sources.
PartsTable Design LLC · partstable.com
Last verified: July 2026